Draft-equalizer.



No. 720,037. PATENTED FEB. 10, 1903. 1). LAWRENCE & J. VINCENT.

DRAFT EQUALIZER. APPLICATION FILED SEPT. 15, 1902. no MODEL.

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DAVID LAWRENCE AND JOHN VINCENT, OF TOM BEAN, TEXAS.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 720,037, dated February10, 1903.

Application filed September 15 1902. Serial No. 123,43 '7. (No model.)

To all whom it may concern:

Be it known that we, DAVID LAWRENCE and JOHN VINCENT, citizens of theUnited States, residing at Torn Bean, in the county of Grayson and Stateof Texas, have invented certain new and useful Improvements inDraft-Equalizers; and we do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The nature of the work in the pulling of a sulky-plow or a disk plow issuch that when four horses are employed with the equalizers now in useone horse invariably walks on the plowed ground in order that the loador plow maybe in the center of draft. This walking of one horse on theplowed ground is a waste of horsefiesh, because the stirred ground isloose. To put three horses on the left side of the beam and only onehorse on the right side creates side draft and causes the plow to takein more land than it can turn or pulverize. I

Our invention relates, first, to the taking away of the side draft;second, to enable the plow to follow the furrow; third, to work three,four, or five horses to the same bars by simply adjusting said bars;fourth, to enable all horsesv except one to walk on solid ground, theone to walk in furrow; fifth, to enable the operator to place load onany point of the bars he chooses and still have a straight pull. As thedrawings appear it is adjusted for four horses; but five horses can beused by removing doubletree E and substituting a three-horse evener, thedraft being equalized by moving stay-rod D one or more holes nearer thecenter of draft-bar B. If the operator has an uneven team, the stay-rodsD and D may be adjusted in draft-bar to the advantage of the team orhorse it is desired to favor. We attain these objects by the mechanismillustrated in the accompanying drawings.

Figure 1 is a top View of the entire device; Fig. 2, a detailed frontview showing end of beam with plate for support of bar to whichdoubletrees are attached.

Like letters of reference designate corresponding parts in both figuresof the drawings.

A designates the beam of a plow, and secured loosely to the front end ofsame are transverse bars B B. B is simply held in position laterally byclevis C, the draft being communicated'through rods D D to bar B, whichis pivoted to plow-beam by strap a and pin b. To the bar B are connecteddoubletrees E E, having singletrees F of the ordinary construction. Theseries of holes a in bar B are larger than the pin, and the services ofclevis andpin are only required-in turning at end of field. The plate G,bolted to end of plow-beam, acts as a rest for bar B.

The invention has the following advantages: It is simple, strong, anddurable, pre' vents side draft, and the horses are arranged convenientlyfor driving.

Changes in the form, proportion, and minor details of construction maybe resorted to without departing from the spirit or sacrificing any ofthe advantages of this invention.

What we claim is In a draft-equalizer, the combination with theplow-beam of a front bar B, provided with a series of holes 0 andloosely pivoted near the front end of said beam, a rear beam B pivotedto said beam at a fixed point thereof and provided with a series ofholes in each end, rods D, D connecting the ends of the bar B to theends of B and adjustable 0n the latter by shifting from one of saidholes to the other doubletrees pivotally attached to the ends of bar B,and a clevis 0 adapted to be shifted from one of the holes 0 in said barto another for regulating the position of said bar laterally wit-hrespect to said beam substantially as set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.

DAVID LAWRENCE. JOHN VINCENT.

Witnesses:

J. K. JAMrsoN, T. P. HOLT.

